66998960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{661}}^1$

素因数の和:862

約数の個数: 80

約数和(自身を含む): 179280192

約数和(自身を除く): 112281232

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 181, 280, 362, 560, 661, 724, 905, 1267, 1322, 1448, 1810, 2534, 2644, 2896, 3305, 3620, 4627, 5068, 5288, 6335, 6610, 7240, 9254, 10136, 10576, 12670, 13220, 14480, 18508, 20272, 23135, 25340, 26440, 37016, 46270, 50680, 52880, 74032, 92540, 101360, 119641, 185080, 239282, 370160, 478564, 598205, 837487, 957128, 1196410, 1674974, 1914256, 2392820, 3349948, 4187435, 4785640, 6699896, 8374870, 9571280, 13399792, 16749740, 33499480, 66998960]

約数ペア:

[(1, 66998960), (2, 33499480), (4, 16749740), (5, 13399792), (7, 9571280), (8, 8374870), (10, 6699896), (14, 4785640), (16, 4187435), (20, 3349948), (28, 2392820), (35, 1914256), (40, 1674974), (56, 1196410), (70, 957128), (80, 837487), (112, 598205), (140, 478564), (181, 370160), (280, 239282), (362, 185080), (560, 119641), (661, 101360), (724, 92540), (905, 74032), (1267, 52880), (1322, 50680), (1448, 46270), (1810, 37016), (2534, 26440), (2644, 25340), (2896, 23135), (3305, 20272), (3620, 18508), (4627, 14480), (5068, 13220), (5288, 12670), (6335, 10576), (6610, 10136), (7240, 9254)]